# smartctl

smartctl --scan
/dev/hdd -d ata # /dev/hdd, ATA device
/dev/sda -d scsi # /dev/sda, SCSI device
/dev/sdb -d scsi # /dev/sdb, SCSI device
/dev/sdc -d scsi # /dev/sdc, SCSI device
/dev/sdd -d scsi # /dev/sdd, SCSI device
/dev/sde -d scsi # /dev/sde, SCSI device
/dev/sdf -d scsi # /dev/sdf, SCSI device
/dev/sdg -d scsi # /dev/sdg, SCSI device
/dev/bus/0 -d megaraid,20 # /dev/bus/0 [megaraid_disk_20], SCSI device
/dev/bus/0 -d megaraid,21 # /dev/bus/0 [megaraid_disk_21], SCSI device
/dev/bus/0 -d megaraid,22 # /dev/bus/0 [megaraid_disk_22], SCSI device
/dev/bus/0 -d megaraid,24 # /dev/bus/0 [megaraid_disk_24], SCSI device
/dev/bus/0 -d megaraid,26 # /dev/bus/0 [megaraid_disk_26], SCSI device
/dev/bus/0 -d megaraid,27 # /dev/bus/0 [megaraid_disk_27], SCSI device
/dev/bus/0 -d megaraid,28 # /dev/bus/0 [megaraid_disk_28], SCSI device
/dev/bus/0 -d megaraid,29 # /dev/bus/0 [megaraid_disk_29], SCSI device

smartctl -S on -a -d megaraid,20 /dev/sda
smartctl -S on -a -d megaraid,21 /dev/sda
smartctl -S on -a -d megaraid,29 /dev/sda